Influence of the plasma environment on auto-ionization
Influence of the plasma environment on auto-ionization
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DOI：
10.1088/0953-4075/49/17/175002
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发表时间：
2016-08
期刊：
影响因子：
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通讯作者：
M. Belkhiri;C. Fontes
中科院分区：
文献类型：
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作者：
M. Belkhiri;C. Fontes
在这项工作中，我们用一个离子球模型说明了等离子体环境对自电离率的影响。为了说明的目的，我们考虑了铝从类氦离子到类氢离子的跃迁，但这个方法是完全通用的，可以应用于任意的高电荷态离子。利用相对论位形平均扭曲波方法，对两种独立的计算格式进行了详细的数值研究和比较。结果表明，自电离率随自由电子密度的降低是由于束缚电子和自由电子之间的量子干涉的变化，并定性地解释了这一趋势。
In this work, we show the influence of the plasma environment on the auto-ionization rate using an ion-sphere model. We consider transitions from the He-like to the H-like ion stage of aluminum for illustrative purposes, but the approach is completely general and can be applied to arbitrary, highly charged ions. A detailed numerical investigation and comparison is made between two independent computational schemes, using the relativistic configuration-average, distorted-wave approach. We show that the decreasing behavior of the auto-ionization rates as a function of free-electron density is due to a change in the quantum interference between the bound and free electrons, and also provide a qualitative explanation of this trend.